You have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. If the house circuit provides 120.0 volts, wh is the current through this bulb?

A. 420 amps

B.

0.029 amps

C.

34 amps

D.

0.0083 amps

I = 0.029 A

Explanation:

It is given that,

Power of hallway is 3.5 watts

The  house circuit provides 120 volts

We need to find the current through this bulb. The power of electric bulb is given by :

So, the electric current is 0.029 A.

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s